Raised Garden Beds and Square Foot Gardening

I’m moving from my deck container garden to a raised garden beds using the square foot gardening technique. I’ve had raised bed gardens in the past but used garden soil from a local organic gardener. I haven’t used these raised bed gardens in almost 5 years so I’m going to replace the top six inches with the specified square foot gardening soil mixture. The square foot gardening book was quite specific about the soil mixture and depth so I’m going to follow that approach to implementing my raised garden beds exactly.


Cleaning the Old Raised Garden Beds

Excavated Raised Garden Beds with Green Hose and Brown Wooden Sides
Raised Garden Beds

I removed the years of weeds and top six inches of garden soil from my raised garden beds and saved the soil in a pile on the side. This is different and yet similar to the approach I used in my containers for my deck garden. This raised bed garden still has another six inches of soil and then six inches of river rocks and a drain pipe to help with drainage so that the soil does not get too moist. My raised bed gardens also have a water hose run to them and I will install my rain drip irrigation system when I’m finished.







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A New Soil Mixture for the Raised Garden Beds

New Soil Mix Packages on a Blue Tarp for Raised Bed Garden
New Soil Mix for Raised Bed Garden

The soil mixture specified in square foot gardening was very specific – especially with respect to the compost variety for us in the raised garden beds. This is very different from my traditional approach using garden soil for my garden containers. I had to go to several stores to find all of the materials and the large amount of vermiculite was the toughest and most expensive to acquire. I also sacrificed an inexpensive tarp, as instructed in square foot gardening, for a place to perform my mixing of the 3 soil components instead of mixing it directly in the raised bed garden.







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Thoroughly Mixing the New Soil for the Raised Bed Garden

Mixing Brown and White New Soil on a Blue Tarp for Raised Bed Vegetable Garden
Mixing New Soil for Raised Bed Vegetable Garden

The compact packaging of the soil components expanded dramatically when I emptied them to prepare the soil mixture for the raised garden beds. Using the tarp helped a lot to preserve and use all of the square foot garden soil mixture in the raised bed garden. The mixture was surprisingly light as it consists of only peat moss, compost and vermiculite. It appeared very much like exactly what is in the little pots when you purchase plants from a nursery. It was a calm day and with a little water sprayed on the mixture, it was easy enough to mix thoroughly.






Revitalized Raised Garden Beds Ready to Plant

Refilled Raised Garden Beds with Newly Mixed Square Foot Garden Soil, Dividers and Cages
Refilled Raised Garden Beds

I filled the top six inches of my raised garden beds with the square foot soil mixture. I then added small divider rows to clearly mark out each square foot in my four foot by eight foot raised bed garden. I also went ahead and put in some support structures so that the taller plants in the middle of the raised bed vegetable garden will have something immediately to begin growing upwards on. Now we’re ready to plant seeds and young plants in the raised bed gardens.






Summary of Raised Garden Beds and Square Foot Gardening

Raised garden beds are ideal for implementing square foot garden techniques. I cleared the top six inches of old garden soil first. Then, I carefully mixed the specified square foot garden soil mixture on a tarp outside of the raised bed garden to insure that I got a thorough mixture. I refilled the raised bed vegetable garden with the new soil mixture, put in square foot marking grids and growth support structures for the tall and vine plants. Next, we’ll plant the seeds and young plants in the raised garden beds.